WO2010072055A1 - 具有串联激磁磁芯的磁性器件 - Google Patents

具有串联激磁磁芯的磁性器件 Download PDF

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Publication number
WO2010072055A1
WO2010072055A1 PCT/CN2009/001569 CN2009001569W WO2010072055A1 WO 2010072055 A1 WO2010072055 A1 WO 2010072055A1 CN 2009001569 W CN2009001569 W CN 2009001569W WO 2010072055 A1 WO2010072055 A1 WO 2010072055A1
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Prior art keywords
core
magnetic
piece
magnetic core
cross
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PCT/CN2009/001569
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English (en)
French (fr)
Inventor
孙建康
Original Assignee
Sun Jiankang
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Publication of WO2010072055A1 publication Critical patent/WO2010072055A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits

Definitions

  • the present invention relates to a magnetic device made of a magnetic conductor material, and more particularly to a transformer or inductor made of a series magnetic core. Background technique
  • a well-known method of miniaturizing a magnetic device is to replace a magnetic material having a larger resistivity to increase the effective magnetic induction Be of the magnetic conductor material, and at the same time, to increase the operating frequency f of the circuit.
  • the specific basis is the formula of the electromagnetic induction law of the transformer in the prior art:
  • V fN Be Ae
  • V-coil induced voltage V-coil induced voltage
  • f-operating frequency V-coil induced voltage
  • N the number of windings of the coil
  • B e the effective magnetic induction of the magnetic conductor material
  • the effective magnetic induction intensity Be and the operating frequency f are increased, the number of turns of the coil can be reduced, the winding space can be saved, and the magnetic device can be miniaturized.
  • the invention is thick in that it overcomes the defects in the prior art, and designs a magnetic component having a series excitation magnetic core, which can be matched with the coil and new without changing the material of the magnetic core.
  • Be is improved from the way of magnetic flux circulation, thereby reducing the number of turns of the magnetic device coil and saving the winding space, thereby realizing the miniaturization of the magnetic device.
  • the technical solution of the present invention is to use a magnetic device having a series excitation core, including a series excitation core and at least one set of coils, and for assembling the assembly.
  • a skeleton of the coil and the magnetic core the magnetic core includes at least one set of cross-plug A-piece cores and a B-piece core, and at least one set together with the A-piece core and the B-core core constitute a magnetic line end a C-piece magnetic core and a D-piece magnetic core connected to the loop, wherein the A-core core and the B-core core are respectively provided with a center pillar, a side leg and a bottom edge perpendicularly connecting the center pillar and the side leg, The center pillar and the side leg are not in the same layer, and the center pillar of the A core is located on the same level as the edge of the B core and the C core, and the middle pillar and the A core of the B core The side legs and the D cores are located on the same layer, and the
  • an insulating magnetic non-magnetic layer is interposed between the cross-plugged A-piece magnetic core and each mating surface of the B-core magnetic core, between the C-piece magnetic core and the D-core magnetic core mating surface
  • An insulating magnetically impermeable layer is also added.
  • the projection of the orthographic projection or cross section of the cross-plug A core and the B core is E-shaped, and the open side of the E-shape is for mating with the bobbin wound with the coil.
  • cross-plugged A-piece magnetic core and the B-piece magnetic core are mounted on the E-shaped opening side with a bobbin wound around the coil and with two E-shaped or I-shaped C-piece magnetic cores and D-pieces
  • the magnetic core is matched.
  • the cross-plugged A-piece magnetic core and the B-piece magnetic core are matched with the two-layer E-shaped C-piece magnetic core and the D-piece magnetic core, and the cross-plugged A-piece magnetic core and B-piece
  • the orthographic projection of the magnetic core is such that the E-shaped opening side is inserted into the bobbin wound around the coil with respect to the C-piece core and the E-shaped opening side of the D-piece core.
  • the cross-plugged A-piece magnetic core and the B-piece magnetic core are matched with the two-layer E-shaped C-piece magnetic core and the D-piece magnetic core, and the cross-plugged A-piece magnetic core and B-piece
  • the cross-sectional projection of the core is such that the E-shaped opening side is inserted into the bobbin wound around the coil with respect to the C-piece core and the E-shaped opening side of the D-piece core.
  • the middle pillar and the side legs of the cross-plug A core and the B core are a long middle column and a long side leg, and the other piece is a short middle column and a short side leg.
  • the A-core core and the B-core magnetic core are inserted at both ends of the coil bobbin
  • An air gap may be disposed on the center pillar between the C core and the D core, and the air gap may be disposed on one side magnetic path or on both side magnetic paths, and the magnetic path passes through the gas
  • the gaps are connected in series.
  • the cross-plugged A-piece magnetic core and the B-piece magnetic core are solidified into a first magnetic core body by glue or epoxy resin, and the C-piece magnetic core and the D-piece magnetic core are also glued or epoxy.
  • the resin is cured into a second magnetic core body, and the first magnetic core body and the second magnetic core body are filled into a skeleton wound with a coil to be solidified into a magnetic device having a series excitation magnetic core.
  • first magnetic core body and the second magnetic core body are flat end portions, and the flat ends of the first magnetic core body and the second magnetic core body are aligned with each other at the joint.
  • the insulating non-magnetic conductive layer is an insulating film or an insulating glue.
  • the A-piece magnetic core and the B-piece magnetic core are annular magnetic cores
  • the toroidal magnetic core is an integral magnetic core
  • the toroidal magnetic core is composed of a plurality of annular magnetic sheets, or a plurality of curved magnetic cores
  • the core is assembled into a toroidal core, and magnetic lines of force may form two or more loops connected end to end in the toroidal core.
  • the transformer or the inductor can reduce the number of turns of the coil, save the winding space, and improve the input stage and output.
  • the voltage ratio of the stage can also increase the efficiency of the transformer or inductor.
  • the magnetic core can reduce the volume of the transformer or inductor by half or more when the same input-to-output voltage ratio or inductance is the same, so that the size of the transformer or inductor can be miniaturized, or the transformer can be in the same circle. In the case of digital ratio, the voltage ratio between the input terminal and the output terminal can be increased by two times or more.
  • the magnetic core can make the magnetic lines of force in the input stage magnetic core be coupled to the output stage after passing through the magnetic core for the first time, the magnetic core can be passed through the magnetic core again for the second time to pass through the output stage coil.
  • the input coil of the transformer passes through the magnetic field line once, the output coil passes the magnetic flux lines twice or more.
  • the output voltage of the transformer is made up to twice the output voltage of the existing transformer.
  • a transformer assembled with such a magnetic core has generated a primary electricity using the above-described magnetic circuit cycle.
  • the process of rising and falling pressure That is, in the transformer of such a magnetic core, the voltage rise and fall is not completely dependent on the number of turns of the coil. That is to say, the transformer has a two-fold or more-fold increase in the efficiency of the transformer without changing the volume of the core and the number of turns of the input and output coils.
  • the magnetic path length of the new magnetic core is made equal to the magnetic path length of the old magnetic core.
  • the length of the middle column and the length of the two legs are only half of the length of the old core and the length of the two legs. Because the magnetic flux is cycled twice, the length of the core is halved, and its equivalent magnetic circuit.
  • the length is constant, the equivalent cross-sectional area of the core is equal, the volume is half of the volume of the existing transformer, the inductance of each coil is the same, the number of turns is the same, the applied circuit topology is unchanged, and the number of turns of each coil is halved.
  • the width of the colloid winding groove is reduced by half, the volume is reduced, the copper consumption is reduced, and the power density is doubled.
  • the magnetic core is used, and the internal magnetic lines of the magnetic core can also be connected in series. After the magnetic core is coupled through the coil once, the magnetic lines generated by the magnetic core can be again passed through the coil for the second time.
  • the coil generates two excitations to the core, which can narrow the hysteresis loop area and reduce the hysteresis. Loss, corrected the linear relationship of the hysteresis loop, and extended the magnetic circuit.
  • the inductance can be adjusted by adjusting the length of the magnetic circuit, not just by the air gap, because the less the air gap, the less the core loss and the less signal distortion.
  • FIG. 1A is a schematic view showing the assembly of an A-piece magnetic core and a B-piece magnetic core in the present invention (upper and lower combinations);
  • FIG. 1A is a schematic view showing the assembly of an A-piece magnetic core and a B-piece magnetic core in the present invention (left-right combination);
  • FIG. Schematic diagram of the structure of the A-piece magnetic core in the present invention;
  • 1C is a schematic view showing the structure of a B-piece magnetic core in the present invention.
  • FIG. 2 is a schematic view showing the assembly of an A-piece magnetic core, a B-piece magnetic core, a C-piece magnetic core, and a D-piece magnetic core in the present invention
  • FIG. 3 is a schematic view showing the assembly of the A core and the B core in the present invention
  • FIG. 4 is a schematic view showing the assembly of the magnetic core, the C core and the D core in FIG. 3
  • Figure 5 is a schematic structural view of the magnetic core of Figure 2 assembled with a coil
  • Figure 6 is a schematic view showing the structure of the magnetic core and the coil assembled in Figure 4;
  • Figure 7 is a schematic view showing a magnetic circuit circulation loop in a magnetic core in the present invention.
  • Figure 8 is a diagram showing the hysteresis loop in the existing magnetic core
  • Figure 9 is a diagram showing the hysteresis loop in the magnetic core of the present invention.
  • Figure 10 is a schematic diagram of a magnetic line circulation loop in a conventional magnetic core
  • Figure 11 is a schematic diagram of a magnetic line circulation loop in the magnetic core of the present invention.
  • Figures 12-1 to 12-5 show the physical model of the circulation of magnetic lines in five kinds of toroidal cores.
  • A-core core 1-1, A-core core; 1-2, A-core core; 1-3, A-core core; 2. B-piece Core; 2-1 B-core core; 2-2, B-core core; 2-3, B-core core bottom; 3. Insulating non-magnetic layer; 4, C Sheet core; 4-1, C piece core center column; 4-2; C piece core side leg; 5, D piece core; 5-1, D piece core center post; 5-2; D piece Core side legs; 6, primary coil; 7, secondary coil. detailed description
  • H NI / L
  • I flowing through the coil Current
  • N the number of turns of the coil
  • L is the axial length of the coil
  • magnetic induction intensity B UH, (U is the magnetic permeability of the magnetic conductor, recorded as magnetic permeability).
  • U the magnetic permeability of the magnetic conductor, recorded as magnetic permeability.
  • the magnetic conductor is made into a ring-shaped closed or EE, EI, ER, EP, RM, POT, UU, etc., so that the two parts are assembled and closed to become a closed closed magnetic circuit.
  • the hysteresis loop is inclined downward, which shows that Br decreases and Bs does not change.
  • the corresponding coil shows that the coercive force Hr is not reduced.
  • Hr is reduced, and Hr is derived from the magnetic effect of the coil, which is the excitation of the magnetic conductor by the magnetic field in the coil. If the number of turns of the coil or the current in the coil is directly reduced In fact, it is only H that changes in the hysteresis loop that is equivalent to the hysteresis loop. It is easy to see that the Hr in the hysteresis loop cannot be moved. After changing the coil, only the magnetic material conductor is changed. Can the magnetic conductor itself act as an excitation to change the shape of the hysteresis loop?
  • the present invention analyzes the magnetic circuit of the magnetic conductor, the material of the magnetic conductor cannot be changed, and when the air gap changes the shape of the hysteresis loop, the material of the magnetic conductor is not changed, then only the magnetic circuit can be left. change.
  • the present invention obtains a curve in which the coercive force Hr is reduced.
  • the physical analysis process of the present invention as shown in FIG. 10, the normal magnetic ring is equally divided into two parts, each part of which has a magnetic field force of ⁇ /2 flowing through the line ⁇ , both of the same size, the same direction, parallel not intersect.
  • FIG. 11 when the cross-plugged magnetic ring of the present invention is used, the magnetic lines of the first and last broken lines are interconnected to obtain a magnetic field core of the series magnetic field.
  • the inductance is only 1/4 of the magnetic field line in Figure 10, because the cross-sectional area is reduced by half and the magnetic flux length is doubled.
  • the lower part is also enveloped, because it is the series relationship of Figure 10. Double the inductance. Because the size of the inductor directly determines the amount of conversion power, so in the figure
  • the magnetic core is made of a magnetic material, and the magnetic core is formed into an orthographic projection or a cross-sectional projection of an E-shaped structure, and a circular or square skeleton is wound with a primary structure.
  • the coil 6 and the secondary coil 7 are provided with through holes in the center of the skeleton, and both ends of the skeleton center hole are respectively inserted into the center pillars of the E-shaped magnetic core.
  • the present invention adopts a set of A-piece magnetic core 1 and B-piece magnetic core 2 structures which are cross-plugged, and another set of two-layer E-shaped or I-shaped C-piece magnetic core 4 and D-piece magnetic core 5 structure,
  • an alternating magnetic field is generated around the primary coil 6, and the alternating magnetic field is reinforced by the magnetic core.
  • the magnetic field lines of the magnetic field are circulated in the magnetic core of the present invention, and the magnetic lines of force are conducted along the center pillar 1-1 of the A-core core to the legs 1-2 of the A-core core, and then from A.
  • the side legs 1-2 of the core are conducted to the side legs 5-2 of the D core, and then from the side 5-2 of the D core 5 to the center pillar 5-1 of the D core, and then
  • the center pillar 5-1 of the D-core core is conducted to the pillar 2-1 of the B-core core, and is then conducted from the center pillar 2-1 of the B-core core to the side leg 2-2 of the B-core core, and then from the B
  • the side leg 2-2 of the core is conducted to the side 4-2 of the C core, and then from the side 4-2 of the C core to the center pillar 4 of the C core, and finally
  • the center pillar 4-1 of the C-core core is transferred back to the center pillar 1-1 of the A-core core, so that the two split magnetic circuits in the original transformer are connected in series to form a closed magnetic circuit connected end to end.
  • the magnetic field and magnetic lines generated by the primary coil 6 will simultaneously induce the induced electromotive force and the induced current in the secondary coil 7, and the induced current in the secondary coil 6 will also generate a magnetic field and a magnetic field line, and the secondary coil 7
  • the generated magnetic field and magnetic lines of force will be superimposed with the magnetic field and magnetic lines generated by the primary coil to enhance the effect of series excitation.
  • a magnetic device having a series excitation core comprising a series excitation core and at least one A set of coils, and a skeleton for assembling the coil and the magnetic core;
  • the magnetic core includes at least one set of cross-plug A-piece cores 1 and B-piece cores 2, as shown in Fig. 1A.
  • at least one set of C-core core 4 and D-piece core 5 constituting a loop of the magnetic flux line end-to-end with the A-piece magnetic core 1 and the B-piece magnetic core 2, as shown in FIG. 2, in the A
  • the core 1 and the B core 2 are respectively provided with a middle pillar 1-1 of the A core, a middle pillar 2-1 of the B core, a leg 1-2 of the A core, and a B magnet.
  • the side legs 2-2 of the core are perpendicularly connected to the bottom edges 1-3 of the A-core cores of the center pillars and the side legs, and the bottom edges 2-3 of the B-piece cores, as shown in FIG. 1B.
  • the middle pillar and the side legs are respectively located on different levels, and the middle pillar 1-1 of the A-core core is located on the same level as the side leg 2-2 of the B-core core and the C-core core 4, and the B-piece
  • the center pillar 2-1 of the magnetic core and the leg 1-2 of the A core and the D core 5 are located on the other layer, and the bottom edge 1-3 of the A core and the bottom edge of the B core 2-3 can be plugged together one another as shown in Figure 1C.
  • an insulating magnetic non-magnetic layer is interposed between the mating faces of the cross-plug A core 1 and the B core 2, and the C core and the D magnet are An insulating magnetically permeable layer 3 is also interposed between the core mating faces.
  • the above-mentioned insulating magnetic non-magnetic layer 3 will separate the magnetic lines of force between the two magnetic cores stacked on each other, and will not be electrically connected to each other, and the magnetic lines of force can only be penetrated from a core by a connecting surface or air gap perpendicular to the magnetic lines of force. Into another core.
  • the preferred embodiment is to form an E-shape by the projection of the orthographic projection or cross-section of the cross-plugged A-piece magnetic core 1 and the B-piece magnetic core 2, the open side of the E-shape Used for mating with a bobbin wound around a coil.
  • the cross-plug A-core core 1 and the B-core core 2 are mounted on the E-shaped opening side with a bobbin wound around the coil and then with two I-shaped C-core cores. 4 cooperate with the D core 5, or the set of cross-plug A core 1 and B core 2, cooperate with the two-layer E-shaped C core 4 and D core 5
  • the orthographic projection of the cross-plug A core 1 and the B core 2 is inserted into the E-shaped opening side opposite to the E-shaped opening side of the C core 4 and the D core 5
  • the skeleton of the coil is shown in Figure 5.
  • the cross-plugged A-piece magnetic core 1 and the B-piece magnetic core 2 cooperate with two-layer E-shaped C-piece magnetic core 4 and D-piece magnetic core 5, and the A-piece magnetic sheet
  • the cross-sectional projection of the core 1 and the B core 2 is such that the E-shaped opening side is inserted into the bobbin wound with the coil opposite to the E-shaped opening side of the C-piece core 4 and the D-piece core 5, and the cross-sectional projection is E.
  • the open core includes magnetic cores (ER, EI, EP, ETD, EFD, RM, POT, EPC, PQ, ED).
  • the middle pillar and the side leg of the cross-plug A core 1 and the B core may be set to be a middle pillar and a long leg, and the other may be set to a short center pillar and short. Side feet, as shown in Figure 3 and Figure 6.
  • an air gap may be provided in the middle pillar between the A-piece magnetic core 1 and the B-piece magnetic core 2 and the C-piece magnetic core 4 and the D-piece magnetic core 5 which are inserted at both ends of the bobbin.
  • the air gap may be disposed on one side of the magnetic circuit or on both sides of the magnetic circuit, and the magnetic circuit is connected in series with each other through the air gap, that is, between one side or both sides of the mutually opposing magnetic core Leave a gap, as shown in Figure 4.
  • the cross-plugged A-piece magnetic core 1 and the B-piece magnetic core 2 are cured with a glue or epoxy resin into a first magnetic core body, and the C-piece magnetic core and the D-piece magnetic core are also Curing to a second magnetic core body with glue or epoxy resin, the first magnetic core body and the second magnetic core body being filled into a skeleton wound with a coil, and being cured into a magnetic device having a series excitation magnetic core .
  • the first magnetic core body and the second magnetic core body are both flat ends, and the flat ends of the first magnetic core body and the second magnetic core body are aligned with each other at the joint, as shown in FIG. 4 and FIG. Show.
  • the A-piece magnetic core 1 and the B-piece magnetic core 2 and the C-piece magnetic core 4 and the D-piece magnetic core 5, which are inserted at both ends of the bobbin, may be provided with an air gap or insulation.
  • the A-piece magnetic core 1 and the B-piece magnetic core 2 are annular magnetic cores
  • the toroidal magnetic core is an integral magnetic core
  • the toroidal magnetic core is assembled by a plurality of annular magnetic sheets
  • a toroidal core is assembled from a plurality of arc-shaped magnetic cores, and magnetic lines of force may form two or more loops connected end to end in the toroidal core, as shown in FIG.
  • the insulating magnetically permeable layer 3 is an insulating film or an insulating paste.
  • the magnetic flux in the central core of the primary coil 6 is equal to Half of the magnetic flux in the middle core of the secondary coil 7.
  • the invention can use a larger wire diameter, a smaller number of coil turns, and a lower copper consumption under the same winding space and the ratio of the voltage to the rise and fall.
  • the present invention designs a magnetic core for series excitation of a magnetic circuit of a transformer, the magnetic core integrally assembling the A core 1 and the B core 2 by an insulating material, and then with the C core 4 and The D-piece magnetic core 5 is assembled into a transformer, and the A-piece magnetic core 1 and the B-piece magnetic core 2 are connected to the C-piece magnetic core 4 and the D-piece magnetic core 5 to form an integral transformer on the skeleton around the coil, and then a tape or a ring is used. Oxygen grease is fixed.
  • the magnetic core structure designed by the present invention is compared with the existing magnetic core structure.
  • the E-shaped magnetic core on the side of the coil bobbin on the existing transformer is removed.
  • the core of the E-shaped cross section, replaced with a set of cross-plug A-core core 1 and B-core core 2 can obtain a higher voltage, the effect is more obvious.
  • the magnetic core of the present invention can realize the end-to-end magnetic flux loops by bypassing each other.
  • the magnetic core of the present invention can make the magnetic lines pass through the primary coil twice. And the secondary coil 7, as shown in FIG.
  • the output voltage can be twice as low as the output voltage of the existing magnetic core transformer.
  • the magnetic flux in the core in the primary coil 6 is equal to the magnetic flux in the core in the secondary coil 7, and the core in the primary coil 6
  • the magnetic flux inside and the magnetic flux in the magnetic core in the secondary coil 7 are both excited twice.
  • the coil is excited twice to the core.
  • the hysteresis loop area can be narrowed by half, and the hysteresis loss, such as hysteresis loop, is reduced.
  • the thin line in Fig. 8 is the hysteresis loop of the ordinary soft magnetic material, and the thick line is the hysteresis loop of the open air gap.
  • the hysteresis loop has obvious residual magnetization reduction, the magnetic saturation is constant, and the hysteresis loop is More inclined and linear;
  • the thick line in Fig. 9 is a hysteresis loop which is excited in series on the basis of the open air gap.
  • the hysteresis line is obviously reduced in remanence, the coercive force is reduced, the area is reduced, the magnetic saturation is constant, and the hysteresis loop is More steep and linear, while BH is more narrow.
  • Figure 12-1 shows the series ring magnet.
  • Figure 12-3 shows that the upper and lower halves of the existing new double-ring core are wound around the coil.
  • the direction of the magnetic lines in the upper and lower cores are the same, but the inductance is:
  • Figure 12-4 shows the upper and lower parts of the existing old magnetic core combined and wound around the coil.
  • the direction of the magnetic lines in the upper and lower cores are the same but they are closed and not connected.
  • the inductance is:
  • Figure 12-5 shows that the upper and lower halves of the series annular core are wound around the coil.
  • the basic method is to divide the magnetic ring of FIG. 4 of FIG. 12 into upper and lower magnetic rings for comparison. If the inductance in this equation is AL0, then the inductance in Figure 12-1 should be 1/4 times AL0; the inductance in Figure 12-2 should be 1/2 times AL0; Figure 12 -3 The inductance in the middle should be 1 times AL0; the inductance in Figure 12-5 should be 2 times AL0
  • the present invention redesigns the magnetic cores EE, EI, ER, EP, RM, POT, EPC, PQ, ED, etc. for the device, and the specific method is similar. .
  • the length (horizontal) or height (vertical) of the new transformer is made half or more of the old transformer.
  • the hole in the skeleton of the transformer is unchanged, and the core is equivalent.
  • the cross-sectional area is equal.
  • the volume is reduced to ER28/28, which is reduced by 17.6%, and the number of turns of the coil is reduced by 36%.
  • EE19/27 is miniaturized.
  • the shrinkage is 40%, the number of turns of the coil is reduced by 45%; the number of turns of each coil is reduced, the copper consumption is reduced, but the inductance is the same, and the air gap is opened in one of the two magnetic circuits connected in series with each other.
  • DC field not easy to be saturated. If the two magnetic circuits are separated, the air gap magnetic circuits are connected in series, the magnetic core is easy to be saturated, and the inductance is adjusted, the number of turns is the same, the applied circuit topology is unchanged, the skeleton winding width is reduced, and the volume is reduced. Reduced, reduced copper consumption and increased power density.
  • the magnetic core provided by the invention can increase the voltage ratio between the input terminal and the output terminal in the same turns ratio when the other parameters are the same.
  • the applied circuit topology is unchanged, the number of coil turns is reduced, the width of the colloid winding is reduced, the volume is reduced, the copper consumption is reduced, and the power density is increased. Therefore, the present invention has industrial applicability.

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Description

具有串联激磁磁芯的磁性器件 技术领域
本发明涉及釆用磁性导体材料做成的磁性器件，具体涉及一种串 联激磁磁芯制成的变压器或电感器。 背景技术
目前， 公知的磁性器件小型化的方法是， 换用更大电阻率的磁性 材料来提高磁导体材料的有效磁感应强度 Be， 且同时提高电路的工 作频率 f来实现。具体依据是现有技术中变压器的电磁感应定律公式：
V= fN Be Ae
V—线圈感应的电压； f一工作的频率；
N—线圈的绕线圈数； B e—磁导体材料的有效磁感应强度；
Ae^兹导体材料的有效横截面积；
即有效磁感应强度 Be和工作频率 f增加时， 则可减少线圈的圈数， 节约绕线空间， 从而磁性器件实现小型化。
但是电路的工作频率升高以后会带来电磁干扰和电路的复杂化 等一系列的敝端。 或者直接减小线圈中的线径， 但是又同时增加了器 件的损耗和温升， 这与环保和节能是相矛盾的。
因此有必要开展一种新技术， 来实现磁性器件小型化问题。 发明内容
本发明的厚的在于克服现有技术中的缺陷，设计一种具有串联激 磁磁芯的磁性 ^件， 采用该磁芯可以在不改变磁芯材质的条件下， 通 过与线圈的搭配和新的设计磁芯构造，从磁力线循环的方式上提高了 Be, 进而可减少磁性器件线圈的圈数， 节约绕线空间， 从而实现磁性 器件的小型化问题。
为实现上述目的，本发明的技术方案是釆用一种具有串联激磁磁 芯的磁性器件， 包括串联激磁磁芯和至少一组线圈， 以及用于装配所 述线圈和磁芯的骨架； 所述磁芯包括至少一组交叉插接的 A片磁芯和 B片磁芯，以及至少一组与所述 A片磁芯和 B片磁芯一起构成磁力线首 尾相连循环回路的 C片磁芯和 D片磁芯， 所述 A片磁芯和 B片磁芯上分 别设有中柱、边脚和垂直连接所述中柱与边脚的底边， 所述中柱与边 脚不在同一层面内，所述 A片磁芯的中柱与 B片磁芯的边脚以及 C片磁 芯位于同层面，所述 B片磁芯的中柱与 A片磁芯的边脚以及 D片磁芯位 于同一层面， 所述 A片磁芯的底边与 B片磁芯的底边可相互重叠地插 接在一起。
其中， 在所述交叉插接的 A片磁芯与 B片磁芯的各配合面之间 加装有绝缘的不导磁层， 在所述 C片磁芯与 D片磁芯配合面之间也 加装有绝缘的不导磁层。
其中， 所述交叉插接的 A片磁芯和 B片磁芯的正投影或截面的 投影为 E形， 所述 E形的开口一侧用于与绕有线圈的骨架插接配合。
其中， 所述交叉插接的 A片磁芯和 B片磁芯， 在所述 E形开口 一侧装入绕有线圈的骨架并与两个 E形或 I形的 C片磁芯与 D片磁 芯相配合。
其中， 所述交叉插接的 A片磁芯和 B片磁芯， 与两个层面 E形 的 C片磁芯和 D片磁芯相配合， 所述交叉插接的 A片磁芯和 B片磁 芯的正投影为 E形开口一侧与 C片磁芯和 D片磁芯的 E形开口一侧 相对***绕有线圈的骨架上。
其中， 所述交叉插接的 A片磁芯和 B片磁芯， 与两个层面 E形 的 C片磁芯和 D片磁芯相配合， 所述交叉插接的 A片磁芯和 B片磁 芯的截面投影为 E形开口一侧与 C片磁芯和 D片磁芯的 E形开口一 侧相对***绕有线圈的骨架上。
其中， 所述交叉插接的 A片磁芯和 B片磁芯中的中柱和边脚一 片为长中柱和长边脚， 另一片为短中柱和短边脚。
其中， 在所述插接在绕有线圈骨架两端的 A片磁芯和 B片磁芯 与 C片磁芯和 D片磁芯之间中柱上可设有气隙， 所述气隙可设置在 一侧磁路上，或设置在两侧磁路上，所述磁路穿过所述气隙互相串联。
其中， 所述交叉插接的 A片磁芯和 B片磁芯之间用胶或环氧树 脂固化成第一磁芯体， 所述 C片磁芯和 D片磁芯也用胶或环氧树脂 固化成第二磁芯体，所述第一磁芯体与第二磁芯体装入绕有线圈的骨 架用胶或环氧树脂固化成具有串联激磁磁芯的磁性器件。
其中， 所述第一磁芯体与第二磁芯体均是平整的端部， 所述第一 磁芯体与第二磁芯体的平整端部在连接处相互对齐。
其中， 所述绝缘的不导磁层为绝缘膜或为绝缘胶。
其中， 所述 A片磁芯和 B片磁芯为环形磁芯， 所述环形磁芯为 一个整体磁芯， 或所述环形磁芯由多个环形磁片拼合成， 或由多段弧 形磁芯拼合成环形磁芯，磁力线可在所述环形磁芯内构成两次或以上 首尾相连的循环回路。
本发明的优点和有益效果在于， 由于釆用了可产生串联激磁效应 的磁芯， 可使变压器或电感器即能减少线圈的圈数， 又能节约绕线空 间， 还能提高输入级与输出级的电压比， 而且还能提高变压器或电感 器的效率。 该磁芯可使变压器或电感器在同样输入输出电压比， 或电 感量相同的情况下体积减小一半或一半以上， 即可使变压器或电感器 的体积小型化， 或者可使变压器在同样圈数比时， 输入端与输出端的 电压比可提升高两倍或以上。 由于体积的减小， 将会减少原材料的用 量， 在缩小体积的同时还降低了变压器或电感器成本。 由于该磁芯可 使输入级磁芯内的磁力线在第一次穿过这种磁芯耦合到输出级后，还 可再一次穿过该磁芯使磁力线第二次穿过输出级线圈，这样一来当变 压器输入线圈通过一次磁力线时， 输出线圈通过两次或以上的磁力 线， 在其它参数相同时， 釆用该磁芯制成变压器的输出级电压是现有 变压器输出电压的两倍及以上， 即： U,/U2=n(N,/N2), 其中 n为整数。 用这种磁芯所组装的变压器利用上述的磁路循环就已经产生一次电 压的升、 降过程。 即在该种磁芯的变压器中， 电压的升降不是完全依 靠线圈的圈数。 也就是说这种变压器在磁芯体积不变， 输入级与输出 级线圈的圈数不变的情况下变压器的效率提高了两倍或两倍以上。
在现有的变压器中若取出原有的磁芯，将本发明的磁芯***以取 代原有的磁芯时，若将新磁芯的磁路长度做成与旧磁芯的磁路长度相 等， 则在新变压器中， 其中中柱的长和两边脚的长度只是旧磁芯中柱 长度和两边脚长度的一半，因为磁力线循环了两次，则磁芯长度减半， 其等效磁路长度不变， 磁芯等效的截面积相等， 体积为现有变压器体 积的一半， 各线圈的电感一样， 圈数比一样， 应用的电路拓扑形式不 变，各组线圈的圈数均减半， 胶体绕线槽宽减半， 体积减少， 铜耗减 少， 功率密度提高一倍。
同样在电感器中釆用上述磁芯，磁芯的内磁力线也可实现串联激 磁， 该磁芯耦合穿过线圈一次后， 可再一次使该磁芯产生的磁力线第 二次穿过线圈， 这样一来磁力线可两次或以上循环流通， 并且两次或 以上的磁力线被串联起来， 线圈对磁芯产生了两次激磁， 这种电感器 可收窄一半磁滞回线面积， 减小磁滞损耗， 修正了磁滞回线的线性关 系， 延长了磁路。 可以通过调节磁路的长度调节电感量， 不是仅仅依 靠气隙调节， 因为气缝隙越少，磁芯损耗就越少， 信号失真少。 附图说明
图 1A是本发明中 A片磁芯和 B片磁芯的组装示意图 (上下组合)； 图 1A，是本发明中 A片磁芯和 B片磁芯的组装示意图 (左右组合)； 图 1B是本发明中 A片磁芯结构示意图；
图 1C是本发明中 B片磁芯结构示意图；
图 2是本发明中 A片磁芯、 B片磁芯、 C片磁芯、 D片磁芯的组装 示意图；
图 3是本发明中 A片磁芯和 B片磁芯一片长一片短的组装示意图； 图 4是图 3中的磁芯与 C片磁芯、 D片磁芯的组装示意图； 图 5是图 2中的磁芯与线圈装配在一起的结构示意图；
图 6是图 4中的磁芯与线圈装配在一起的结构示意图；
图 7是本发明中磁芯内磁力线循环回路示意图；
图 8是现有磁芯内磁滞回线图；
图 9是本发明中磁芯内磁滞回线图；
图 10是现有磁芯中磁力线循环回路原理图；
图 11是本发明磁芯中磁力线循环回路原理图；
图 12-1〜12-5是 5种环状磁芯中磁力线的循环方式的物理模型。 图中： 1、 A片磁芯； 1-1、 A片磁芯的中柱； 1-2、 A片磁芯的边 脚； 1-3、 A片磁芯的底边； 2、 B片磁芯； 2-1 B片磁芯的中柱； 2-2、 B片磁芯的边脚； 2-3、 B片磁芯的底边； 3、 绝缘的不导磁层； 4、 C片磁芯； 4-1、 C片磁芯中柱； 4-2; C片磁芯边脚； 5、 D片磁芯； 5-1、 D片磁芯中柱； 5-2; D片磁芯边脚； 6、 初级线圈； 7、 次级线 圈。 具体实施方式
下面结合附图和实施例， 对本发明的具体实施方式作进一步描 述。 以下实施例仅用于更加清楚地说明本发明的技术方案， 而不能以 此来限制本发明的保护范围。
如图 7至 9所示， 本发明所述磁芯能够产生串联激磁的原理是： 众所周知通电的螺旋线圈会产生磁场， 其磁场强度 H，H= NI/L ， （其 中 I 为流经线圈的电流， N为线圈的圈数， L为线圈轴向长度)。 内 部加入磁导体， 则磁力线被磁导体聚合重新分布， 依据磁性导体材料 导磁能力的不同， 磁导体内部的感应的磁场强不一， 而描述的磁性材 料导体内的磁感应强度的物理量记为 B, 磁感应强度 B=UH， (U为 磁导体的导磁能力，记为磁导率） 。当线圈中的电流不是恒流源而是变 化的时候， 测定 B和 H的周期变化进程时， 可得到众所周知的磁滞 回线， 如图 8所示， （Hr ，Hs， Br, Bs )。 在没有气隙 GAP时， 根据 周期对偶性， 当磁导体表现出的是剩磁 Br， 对应线圈表现出的是矫 顽力 Hr。 为了磁力线能尽量实现首尾闭合， 组成封闭， 减少漏磁通。 把磁导体做成环形闭合或者 EE、 EI、 ER、 EP、 RM、 POT、 UU等， 以利两部分组装闭合， 成为封闭闭合磁路。 当磁路中间截面有气隙 GAP时， 磁滞回线向下倾， 表现出 Br减小， Bs不变。 此时对应线圈 表现出的是矫顽力 Hr没有减少。 为何没有气隙 GAP 时， Hr和 Br 有物理对应关系，有气隙 GAP时， B r减少， Hr却没有实质的变化呢？ 有没有办法将 Hr和 Br同时减少呢？ 于是， 本发明做了如下改进。
如图 8所示， 首先先由磁芯说起， 要减少 Hr, 而 Hr来源于线圈 的磁效应， 是线圈中的磁场对磁导体的激励， 若直接减少线圈的圈数 或线圈中的电流， 其实只是 H在变化相当于磁滞回线中的部份磁滞 回线变动。 显面易见无法移动磁滞回线中的 Hr， 除了改线圈以后， 只剩下改磁性材料导体了， 磁导体本身能否作为激励， 从而改变磁滞 回线的形状呢？ 延着这条思路本发明分析起磁导体的磁路来，磁导体 的材质不能改变， 开气隙改变磁滞回线的形状时， 是不改变磁导体的 材质的， 那么只剩下磁路可以改。 为了改磁路， 先分析一下测定磁滞 回线时所用的磁路，它近似为从线圈一边进另外一边穿出首尾闭合磁 力线圆环型柱， 因为受到线圏的约束所以变长短或粗细来影响 Hr实 用意义较少， 考滤到磁路从线圈中只穿过一次本发明改变结构， 让磁 路从线圈子中穿过两次。 本发明得到了矫顽力 Hr减少的曲线。 回过 头来， 本发明的物理分析过程： 如图 10所示， 将正常磁环等分成两 部分， 每一部分为 Φ/2的磁力线势流过线圏， 两者大小相等， 方向相 同， 平行而不相交。 如图 11所示， 当釆用本发明中的交叉插接的磁 环时可是首尾断开的磁力线再互联在一起， 得到了串联磁力线磁芯， 当线圈只对上部分激磁时下半部分没有绕上线圈， 电感只有图 10中 磁力线的 1/4， 是因为横截面积减小一半， 磁力线长度增加一倍。 当 线圈绕制时， 同时也把下部分包络进去， 因为串联关系它是图 10的 电感的两倍。 因为电感的大小直接决定了变换功率的多少， 所以在图
11中当横截面积不变， 磁力线长度减少一半， 即圆环直径减少一半。 为了做到与图 10中的电感一样， 必须减少一半的圈数。 这说明串联 激磁的磁芯用更少的圈数可以做到同样的激磁，同样的圈数只要更小 的电流就可以做到同样的激磁， 因为线圈的电流减小， 所以求证了
Hr变小。
如图 5至 7所示， 在本发明中， 首先磁芯选用了磁性材料， 将所述 磁芯制成正投影或截面投影为 E形的结构， 在圆形或方形的骨架上缠 绕有初级线圈 6和次级线圈 7， 在骨架的中心设有通孔， 将所述骨架中 心孔的两端分别*** E形磁芯的中柱。 由于本发明采用一组是交叉插 接的 A片磁芯 1和 B片磁芯 2结构，另一组为两个层面 E形或 I形的 C片磁 芯 4和 D片磁芯 5结构， 当初级线圈 6与交流电连接后， 初级线圈 6周围 将产生交变磁场， 所述交变磁场被所述磁芯加强。 如图 7所示， 该磁 场的磁力线在本发明的上述磁芯中循环路径为， 磁力线沿 A片磁芯 的中柱 1-1传导至 A片磁芯的边脚 1-2，再从 A片磁芯的边脚 1-2传导至 D 片磁芯的边脚 5-2, 再从 D片磁芯 5的边脚 5-2传导至 D片磁芯的中柱 5-1 , 再从 D片磁芯的中柱 5-1传导至 B片磁芯中柱 2-1， 再从 B片磁芯的 中柱 2-1传导至 B片磁芯的边脚 2-2,再从 B片磁芯的边脚 2-2传导至 C片 磁芯的边脚 4-2 , 再从 C片磁芯的边脚 4-2传导至 C片磁芯的中柱 4- 1， 最后再从 C片磁芯的中柱 4-1传回到 A片磁芯的中柱 1-1，使原有变压器 中的两个分磁路串接成一路首尾相联的闭合磁路。 由于在变压器中， 上述初级线圈 6所产生的磁场、磁力线将同时会使次级线圈 7产生感应 电动势和感应电流， 次级线圈 6中的感应电流也将产生磁场、磁力线， 次级线圈 7所产生的磁场、 磁力线将与初级线圈所产生的磁场、 磁力 线相互叠加相互加强达到串联激磁的效果。
本发明的具体实施技术方案如下：
一种具有串联激磁磁芯的磁性器件，包括串联激磁磁芯和至少一 组线圈， 以及用于装配所述线圈和磁芯的骨架； 所述磁芯包括至少一 组交叉插接的 A片磁芯 1和 B片磁芯 2， 如附图 1A所示。 以及至少一组 与所述 A片磁芯 1和 B片磁芯 2—起构成磁力线首尾相连循环回路的 C 片磁芯 4和 D片磁芯 5， 如附图 2所示， 在所述 A片磁芯 1和 B片磁芯 2上 分别设有 A片磁芯的中柱 1-1、B片磁芯的中柱 2-1、 A片磁芯的边脚 1-2、 B片磁芯的边脚 2-2、 垂直连接上述中柱与边脚的 A片磁芯的底边 1-3、 B片磁芯的底边 2-3，如附图 1B所示。上述中柱与边脚分别位于不同的 层面上， 所述 A片磁芯的中柱 1-1与 B片磁芯的边脚 2-2以及 C片磁芯 4 位于同一层面， 所述 B片磁芯的中柱 2-1与 A片磁芯的边脚 1-2以及 D片 磁芯 5位于另一个层面， 所述 A片磁芯的底边 1-3与 B片磁芯的底边 2-3 可以相互重叠插接在一起如附图 1C所示。
在本发明中， 在所述交叉插接的 A片磁芯 1与 B片磁芯 2的各 配合面之间加装有绝缘的不导磁层， 在所述 C片磁芯与 D片磁芯配 合面之间也加装有绝缘的不导磁层 3。 上述绝缘的不导磁层 3将使相 互叠加的两片磁芯之间的磁力线被隔离开， 不相互导通， 磁力线只有 在与磁力线相垂直的连接面或气隙处才能从一片磁芯穿入到另一片 磁芯内。
在本发明中， 最佳实施例是釆用将所述交叉插接的 A 片磁芯 1 和 B片磁芯 2的正投影或截面的投影制成 E形， 所述 E形的开口一 侧用于与绕有线圈的骨架插接配合。
在本发明中，所述交叉插接的 A片磁芯 1和 B片磁芯 2，在所述 E形开口一侧装入绕有线圈的骨架后再与两个 I形的 C片磁芯 4与 D 片磁芯 5相配合，或所述一组交叉插接 A片磁芯 1和 B片磁芯 2， 与 两个层面 E形的 C片磁芯 4和 D片磁芯 5相配合， 将所述交叉插接 的 A片磁芯 1和 B片磁芯 2的正投影为 E形开口一侧与 C片磁芯 4 和 D片磁芯 5的 E形开口一侧相对***绕有线圈的骨架上， 如图 5 所示。 在本发明中，所述交叉插接的 A片磁芯 1和 B片磁芯 2, 与两个 层面 E形的 C片磁芯 4和 D片磁芯 5相配合， 将所述 A片磁芯 1和 B片磁芯 2的截面投影为 E形开口一侧与 C片磁芯 4和 D片磁芯 5 的 E形开口一侧相对***绕有线圈的骨架上， 所述截面投影为 E形 开口磁芯包括 （ER、 EI、 EP、 ETD、 EFD、 RM、 POT、 EPC、 PQ、 ED)形的磁芯。
在本发明中， 可将所述交叉插接的 A片磁芯 1和 B片磁芯中 2 的中柱和边脚一片设置成长中柱和长边脚，另一片设置成短中柱和短 边脚， 如图 3和图 6所示。
在本发明中 ,在所述插接在绕有线圈骨架两端的 A片磁芯 1和 B 片磁芯 2与 C片磁芯 4和 D片磁芯 5之间中柱上可设有气隙， 所述 气隙可设置在一侧磁路上， 或设置在两侧磁路上， 所述磁路穿过所述 气隙互相串联， 也就是说在相互对接磁芯的一侧或两侧之间留有缝 隙， 如图 4所示。
在本发明中， 所述交叉插接的 A片磁芯 1和 B片磁芯 2之间用 胶或环氧树脂固化成第一磁芯体， 所述 C片磁芯和 D片磁芯也用胶 或环氧树脂固化成第二磁芯体，所述第一磁芯体与第二磁芯体装入绕 有线圈的骨架用胶或环氧树脂固化成具有串联激磁磁芯的磁性器件。 所述第一磁芯体与第二磁芯体均是平整的端部，所述第一磁芯体与第 二磁芯体的平整端部在连接处相互对齐， 如图 4和图 5所示。
在本发明中， 所述插接在绕有线圈骨架两端的 A片磁芯 1和 B 片磁芯 2与 C片磁芯 4和 D片磁芯 5之间可设有气隙或绝缘的不导 磁层 3。
在本发明中， 所述 A片磁芯 1和 B片磁芯 2为环形磁芯， 所述 环形磁芯为一个整体磁芯， 或所述环形磁芯由多个环形磁片拼合成, 或由多段弧形磁芯拼合成环形磁芯，磁力线可在所述环形磁芯内构成 两次或以上首尾相连的循环回路， 如图 11所示。 在本发明中， 所述绝缘的不导磁层 3为绝缘膜或为绝缘胶。
如图 6所示， 在本发明中， 当初级线圈 6被缠绕在 A片磁芯 1 和 B片磁芯 2之间， 这时初级线圈 6通电后， 初级线圈 6中部磁芯 内的磁通量等于次级线圈 7中部磁芯内的磁通量的一半。本发明在同 样的绕线空间内和升降电压比的条件下， 可以使用更大的线径， 更少 的线圈圈数， 更低的铜耗。 为此， 本发明设计了用于变压器的磁路串 联激磁的磁芯， 该磁芯通过绝缘材料将 A片磁芯 1和 B片磁芯 2组 装为一体， 然后再与 C片磁芯 4和 D片磁芯 5组装成变压器， 在绕 有线圈的骨架上将 A片磁芯 1和 B片磁芯 2与 C片磁芯 4和 D片磁 芯 5对接成一整体变压器， 再用胶布或环氧脂固定。
本发明所设计的磁芯结构与现有磁芯结构相比较， 如图 5所示， 在用现有磁芯组成的变压器上，取下现有变压器上绕线圈骨架一侧的 E形磁芯或 E形截面的磁芯， 换上一组交叉插接的 A片磁芯 1和 B 片磁芯 2, 可以得到更高的电压， 效果比较明显。 将两种变压器磁芯 进行比较，在结构上本发明中的磁芯能实现彼此之间互相绕过环抱构 成首尾相连的磁力线回路，本发明中的磁芯可使磁力线两次穿过初级 线圈 6和次级线圈 7， 如图 6所示，若 A片磁芯 1和 B片磁芯 2为一 片长一片短， 将初级线圈 6装在长片与短片之间时， 初级线圈 6中的 磁芯内只有一次磁磁力线通过， 在次级线圈 7内插接有交叉插接 A 片磁芯 1和 B片磁芯 2，在次级线圈 7中的磁芯内就将有两次磁力线 通过， 且两次通过的磁力线被串连在一起， 考虑漏磁通的影响， 输出 的电压可以达到现有磁芯变压器的输出电压的两倍稍低。
如图 5所示， 若 A片磁芯和 B片磁芯的长度相等时， 初级线圈 6中的磁芯内的磁通量等于次级线圈 7中磁芯内的磁通量， 初级线圈 6中的磁芯内的磁通和次级线圈 7中磁芯中的磁通都激磁两次。 磁通 有两次或以上循环流通串联时， 线圈对磁芯两次激磁， 如图 9所示， 可收窄一半磁滞回线面积， 减小了磁滞损耗， 如磁滞回线。 图 8中的细线为普通的软磁材料的磁滞回线， 粗线的为开气缝 隙的磁滞回线， 此磁滞回线明显剩磁减少， 磁饱和不变， 磁滞回线更 加倾斜和线性；
图 9中的粗线为在开气缝隙的基础上串联激磁的磁滞回线， 此 滞回线明显剩磁减少， 矫顽力减小， 面积减小， 磁饱和不变， 磁滞回 线更加陡直和线性， 同时 B-H更加狭窄。
为了进一步说明减少圈数， 也可引起同样效果的激磁， 即圈数减 少时却能得到同样的磁场强度。 本发明设计了如下图 12中五种物理 模型。
这 5种物理模型可对五种环形磁芯 （因为对磁性材料进行分析 时， 一般是用磁环测定电感来换算磁导率 Ue )的电感系数进行分析， 图 12-1为串联环状磁芯的下半部没有被绕上线圈则电感系数： Α£1-4πυε(Αβ/2)/(ί6+ Le)=l/4AL0;
图 12-2为现有双环新磁芯中下半部没有被绕上线圈则电感系数： AL2=47iUe(Ae/2)/(Le+ Le)=l/2AL0;
图 12-3为现有双环新磁芯中上下半部都被绕上线圈， 上下磁芯 中的磁力线方向相同，但各自闭合而不连则电感系数：
AL3=47iUe(Ae/2)/Le+ 47rUe(Ae/2)/Le =47iUeAe/Le =AL0;
图 12-4为现有旧磁芯中上下均分再组合,被绕上线圈， 上下磁芯 中的磁力线方向相方向相同但各自闭合而不连，则电感系数：
AL4=47rUeAe/Le =AL0;
图 12-5为串联环状磁芯的上下半部都被绕上线圈则电感系数： AL5=4 X 47tUe(Ae/2)/(Le+ Le)+ 4 χ 47iUe(Ae/2)/(Le+ Le)
=2 x 47iUeAe/Le=2 x AL0。
其基本方法是将图 12的图 -4的磁环等分成上下相同的磁环进行 对比。 若令该式中的电感系数为 AL0, 则图 12-1中的电感系数就应 为 1/4倍的 AL0; 图 12-2中的电感系数就应为 1/2倍的 AL0; 图 12-3 中的电感系数就应为 1倍的 AL0; 图 12-5中的电感系数就应为 2倍 的 AL0
其中 Ue为磁性材料的磁导率， Ae为磁回路的等效截面积， Le 为磁回路的等效长度。结果显示图 12-5的电感系数为图 12-4的两倍。 若图 12-4与图 12-5的磁环均封装， 只能从外形上测定 Ae、 Le, 且 会得到外型上两者有相同的 Ae和 Le。 所以在运用电磁感应定律公 式时（V=^fNBeAe )磁导体材料的有效横截面积未变； 磁导体材料 的有效磁感应强度由材质决定， 两种状态下均应以不饱和设计， 也未 变； 工作的频率也未变； 线圈感应的电压实测却不一样。 为了达达到 一样的电压， 本发明需将圈数降为 ^/2N， 因为电感
L=Al*N2=47oieAe/Le*N*N。 绕上同样的线圈圈数后， 测定的电感却为 两倍， 那么在同样的一个材质下， 就会导算出有两个 Ue, 且成倍数 关系。 电感高的， 磁导率 Ue就高， 因此串联一次提高一倍的 Ue， 同 理串联 n次则提高 n倍的 Ue(n自然数） 。
为了达到图 12-5磁环的效果， 来小型化磁性器件， 本发明重新把 器件用的磁芯 EE、 EI、 ER、 EP、 RM、 POT、 EPC、 PQ、 ED等重新 设计， 具体做法类似。
在现用的变压器中该变压器去取代旧变压器时，把新变压器的长 度 (卧式)或高度 (立式)做成为旧变压器一半及以上， 变压器的骨架中 孔不变，磁芯等效的截面积相等， 为了减少开模， 尽量共用现有规格 的标准品， 如 ER28/34, 体积小型化为 ER28/28, 缩小了 17.6%， 线 圈的圈数减少 36%; EE19/27体积小型化为 EE19/16, 缩小了 40%, 线圈的圈数减少 45%; 各线圈的圈数减少， 铜耗减少， 但电感一样， 气隙开在两互相串联首尾相连磁路中的其一， 承载直流场， 不易饱和 若分开在两磁路上则气隙磁路互相串联，磁芯容易饱和， 且调解电感， 圈数比一样， 应用的电路拓朴形式不变， 骨架绕线槽宽减少， 体积减 少， 铜耗减少， 功率密度提高。 以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领 域的普通技术人员来说， 在不脱离本发明技术原理的前提下， 还可以 做出若干改进和润饰， 这些改进和润饰也应视为本发明的保护范围。 工业实用性
本发明提供的磁芯在其它参数相同时， 可使变压器在同样圈数比 时提高输入端与输出端的电压比。 应用的电路拓扑形式不变， 线圈圈 数减少， 胶体绕线槽宽减少， 体积减少， 铜耗减少， 功率密度提高。 因此， 本发明具有产业上的可利用性。

Claims

权 利 要 求 书
一种具有串联激磁磁芯的磁性器件， 其特征在于， 包括串联激磁磁芯 和至少一组线圈， 以及用于装配所述线圈和磁芯的骨架； 所述磁芯包括至少 一组交叉插接的 A片磁芯和 B片磁芯， 以及至少一组与所述 A片磁芯和 B片磁 芯一起构成磁力线首尾相连循环回路的 C片磁芯和 D片磁芯， 所述 A片磁芯和 B片磁芯上分别设有中柱、边脚和垂直连接所述中柱与边脚的底边，所述中柱 与边脚不在同一构造层， 所述 A片磁芯的中柱与 B片磁芯的边脚以及 C片磁芯 位于同一构造， 所述 B片磁芯的中柱与 A片磁芯的边脚以及 D片磁芯位于同一 构造， 所述 A片磁芯的底边与 B片磁芯的底边可相互重叠地插接在一起。
2、 如杈利要求 1所述具有串联激磁磁芯的磁性器件， 其特征在于， 在所 述交叉插接的 A片磁芯与 B片磁芯的各配合面之间加装有绝缘的不导磁层， 在所述 C片磁芯与 D片磁芯配合面之间也加装有绝缘的不导磁层。
3、 如杈利要求 2所述具有串联激磁磁芯的磁性器件， 其特征在于， 所述' 交叉插接的 A片磁芯和 B片磁芯的正投影或截面的投影为 E形，所述 E形的 开口一侧用于与绕有线圈的骨架插接配合。
4、 如权利要求 3所述具有串联激磁磁芯的磁性器件， 其特征在于， 所述 交叉插接的 A片磁芯和 B片磁芯，在所述 E形开口一侧装入绕有线圈的骨架 并与两个 E形或 I形的 C片磁芯与 D片磁芯相配合。
5、 如杈利要求 3所述具有串联激磁磁芯的磁性器件， 其特征在于， 所述 交叉插接的 A片磁芯和 B片磁芯， 与两个层面 E形的 C片磁芯和 D片磁芯 相配合，所述交叉插接的 A片磁芯和 B片磁芯的正投影为 E形开口一侧与 C 片磁芯和 D片磁芯的 E形开口一侧相对***绕有线圏的骨架上。
6、 如权利要求 3所述具有串联激磁磁芯的磁性器件， 其特征在于， 所述 交叉插接的 A片磁芯和 B片磁芯， 与两个层面 E形的 C片磁芯和 D片磁芯 相配合，所述交叉插接的 A片磁芯和 B片磁芯的截面投影为 E形开口一侧与 C片磁芯和 D片磁芯的 E形开口一侧相对***绕有线圈的骨架上。
7、 如权利要求 1至 6中任一项所述具有串联激磁磁芯的磁性器件， 其特
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更正页（细则第 91条） 征在于，所述交叉插接的 A片磁芯和 B片磁芯中的中柱和边脚一片可为长中 柱和长边脚，另一片则为短中柱和短边脚，在底边处，磁力线为前后或左右绕行 时， 中柱和边脚一为长，另一片则为短， 在底边处，磁力线为上下绕行时， 中柱 和边脚可为同长。
8、 如权利要求 7所述具有串联激磁磁芯的磁性器件， 其特征在于， 在所 述插接在绕有线圈骨架两端的 A片磁芯和 B片磁芯与 C片磁芯和 D片磁芯 之间中柱上可设有气隙， 所述气隙可设置在一侧磁路上， 或设置在两侧磁路 上， 所述磁路穿过所述气隙互相串联。
9、 如权利要求 8所述具有串联激磁磁芯的磁性器件， 其特征在于， 所述 交叉插接的 A片磁芯和 B片磁芯之间用胶或环氧树脂固化成第一磁芯体，所 述 C片磁芯和 D片磁芯也用胶或环氧树脂固化成第二磁芯体，所述第一磁芯 体与第二磁芯体装入绕有线圏的骨架用胶或环氧树脂固化成具有串联激磁磁 芯的磁性器件。
10、 如权利要求 9所述具有串联激磁磁芯的磁性器件， 其特征在于， 所 述第一磁芯体与第二磁芯体均是平整的端部， 所述第一磁芯体与第二磁芯体 的平整端部在连接处相互对齐。
11、 如权利要求 3所述具有串联激磁磁芯的磁性器件， 其特征在于， 所 述绝缘的不导磁层为绝缘膜或为绝缘胶。
12、 如权利要求 1所述具有串联激磁磁芯的磁性器件， 其特征在于， 所 述 A片磁芯和 B片磁芯为环形磁芯， 所述环形磁芯为一个整体磁芯， 或所述 环形磁芯由多个环形磁片拼合成， 或由多段弧形磁芯拼合成环形磁芯， 磁力 线可在所述环形磁芯内构成两次或以上首尾相连的循环回路。
13、 如权利要求 3所述具有串联激磁磁芯的磁性器件， 其特征在于， 所 述交叉插接的 A片磁芯和 B片磁芯， 与两个层面 E形的 C片磁芯和 D片磁 芯相配合，所述交叉插接的 A片磁芯和 B片磁芯的各自中柱和边脚互相组合 时,位置关系可设计成上下或左右或三角或圆弧对接，同时 C片磁芯和 D片磁 芯的对接的端面形状和 A片磁芯和 B片磁芯的端面形状一致且刚好对齐。
14、 如权利要求 3所述具有串联激磁磁芯的磁性器件， 其特征在于， 所
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更正页 （细则第 91条） 述交叉插接的 A片磁芯和 B片磁芯， A片磁芯和 B片磁芯拼装以后，外形类 比如 ER、 EI、 EP、 ETD、 EFD、 RM、 POT、 EPC、 PQ、 ED的磁芯中的一片。
PCT/CN2009/001569 2008-12-26 2009-12-28 具有串联激磁磁芯的磁性器件 WO2010072055A1 (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101321400A (zh) * 2002-10-09 2008-12-10 诺基亚公司 通信***
CN112201452A (zh) * 2020-10-30 2021-01-08 深圳市京泉华科技股份有限公司 磁芯及应用该磁芯的变压器
CN114823091A (zh) * 2022-05-13 2022-07-29 重庆科新电气有限公司 一种10kV出线三角形连接结构及其制作工艺

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101552101B (zh) * 2008-12-26 2013-01-23 孙建康 具有串联激磁磁芯的磁性器件
CN108242323A (zh) * 2017-12-22 2018-07-03 浙江东睦科达磁电有限公司 一种e型磁粉芯
FR3084510B1 (fr) * 2018-07-26 2020-11-27 Valeo Systemes De Controle Moteur Noyau magnetique pour former des bobines
JP7200586B2 (ja) * 2018-10-09 2023-01-10 スミダコーポレーション株式会社 生体刺激用磁場発生装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155676A (en) * 1991-11-01 1992-10-13 International Business Machines Corporation Gapped/ungapped magnetic core
CN1866420A (zh) * 2005-04-22 2006-11-22 株式会社田村制作所 电磁装置用磁心及具有该电磁装置用磁心的电磁装置
CN201311823Y (zh) * 2008-11-11 2009-09-16 孙建康 一种串联激磁的磁芯
CN101552101A (zh) * 2008-12-26 2009-10-07 孙建康 具有串联激磁磁芯的磁性器件

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200962363Y (zh) * 2006-06-26 2007-10-17 周仲骅 电磁—永磁串联型磁力装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155676A (en) * 1991-11-01 1992-10-13 International Business Machines Corporation Gapped/ungapped magnetic core
CN1866420A (zh) * 2005-04-22 2006-11-22 株式会社田村制作所 电磁装置用磁心及具有该电磁装置用磁心的电磁装置
CN201311823Y (zh) * 2008-11-11 2009-09-16 孙建康 一种串联激磁的磁芯
CN101552101A (zh) * 2008-12-26 2009-10-07 孙建康 具有串联激磁磁芯的磁性器件

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101321400A (zh) * 2002-10-09 2008-12-10 诺基亚公司 通信***
CN112201452A (zh) * 2020-10-30 2021-01-08 深圳市京泉华科技股份有限公司 磁芯及应用该磁芯的变压器
CN114823091A (zh) * 2022-05-13 2022-07-29 重庆科新电气有限公司 一种10kV出线三角形连接结构及其制作工艺
CN114823091B (zh) * 2022-05-13 2023-12-22 重庆科新电气有限公司 一种10kV出线三角形连接结构

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